coordinate systemlaslidar
Is it possible to project LAS files using Open source tools eg. lastools if using a less common coordinatesystem like local swedish espg: 3008 as destination and espg: 3006 as source?
I see 3008 is not listed in the LAS tools project drop down.
Is it still possible with some other open source solution like fusion?
It is possible to generate a DEM from a las file within QGIS using Fusion.
Use this tutorial to enable FUSION's tools in QGIS (works up to QGIS 2.18 version*). It is written for LAStools, but it is straightforward adapting it.
*As from QGIS version 3, one can install the plugin (besides the core software) and work from there. See: Unable to install FUSION in QGIS 3.2?.
Once you manage to activate Fusion, you will need the GroundFilter tool for classifying ground points (if the point cloud is not yet classified), and then, GridSurfaceCreate to generate the DEM.
If you don't need to use QGIS, I suggest the following approach, which classifies ground points with the MCC algorithm.
Have a look at the documentation here:
https://www.cs.unc.edu/~isenburg/lastools/download/lasinfo_README.txt
This suggests that simply using the -repair option will be enough and that the operation will be performed in place (i.e. you don't need to specify an output). For example:
lasinfo -i *.las -repair
IMO the GUIs in LAStools are horrible and it's much easier to do everything via the command line.
Best Answer
You could have a look at Transform CRS LiDAR point clouds in lidR and define the SWERF99 TM source -- destination coordinate transformation directly (instead of using the EPSG if the CRS is not listed), by defining the corresponding proj4 or CYS formats.
Liblas has also capabilities to transform data using the option
-a_srsfor the source dataset and-t_srsfor the destination dataset, with a the corresponding proj definitions as used by the other GDAL tools. Liblas is a little bit outdated byt compiled againstGDALandProj4.